using ShotSimulator.Target;
using ShotSimulator.Train.Info;
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Random = UnityEngine.Random;

namespace ShotSimulator.Train
{
    public class EnemyTideShotTrainHandle : BaseTrainHandle
    {
        private List<Vector3> originPos = new List<Vector3>()
        {
            new Vector3(-4,-2f,15),new Vector3(4,-2f,16),
            new Vector3(-4,-2f,11f),new Vector3(4,-2f,11f),
            new Vector3(-4,-2f,6f),new Vector3(4,-2f,6f),
        };

        private EnemyTideShotTrainDifficultyData m_DifficultyData;
        private EnemyTideShotTrainScoreData m_ScoreData;

        private List<AIHumanoidShotTarget> curTargets = new List<AIHumanoidShotTarget>();

        private double m_TotalHitNum;
        private double TotalHitNum
        {
            get { return m_TotalHitNum; }
            set
            {
                m_TotalHitNum = value;
                UpdatePrecision();
            }
        }
        private double m_MissHitNum;
        private double MissHitNum
        {
            get { return m_MissHitNum; }
            set
            {
                m_MissHitNum = value;
                UpdatePrecision();
            }
        }
        private double totalKillNum;
        private double Headshots;

        public EnemyTideShotTrainHandle(BaseTrainCallBack callBack, BaseTrainInfo info, DifficultyType difficultyType) : base(callBack, info, difficultyType)
        {
            SetShotTargetInteractiveEvent(ShotTargetInteractiveType.OnClick, OnShottedTargetEvent);

            m_DifficultyData = info.GetDifficultyData<EnemyTideShotTrainDifficultyData>(m_DifficultyType);
            m_ScoreData = info.GetScoreData<EnemyTideShotTrainScoreData>(m_DifficultyType);
        }

        #region Train
        protected override void ResetTrain()
        {
            ResetTarget();

            m_TotalHitNum = 0;
            m_MissHitNum = 0;
            totalKillNum = 0;
            Headshots = 0;
        }

        public override void StartTrain()
        {
            base.StartTrain();

            GenerateShotTarget();

            StartBestHitTimer();
        }
        public override void PauseTrain()
        {
            base.PauseTrain();
            for(int i = 0; i< curTargets.Count; i++)
            {
                curTargets[i].SetPause(true);
            }
        }

        public override void ContinueTrain()
        {
            base.ContinueTrain();
            for (int i = 0; i < curTargets.Count; i++)
            {
                curTargets[i].SetPause(false);
            }
        }
        public override void CalculateTrainResult()
        {
            SetResultMetricsDataValue(MetricsType.Headshots, Headshots);
            SetResultMetricsDataValue(MetricsType.TimeToKill, Math.Round(TrainInfo.duration / totalKillNum, 2));
            SetResultMetricsDataValue(MetricsType.KillTotal, totalKillNum);
        }
        #endregion

        #region Target
        private void OnShottedTargetEvent(BaseShotTarget target)
        {
            if (target != null)
            {
                HumanoidPartShotTarget part = target as HumanoidPartShotTarget;
                AIHumanoidShotTarget dependTarget = part.DependTarget as AIHumanoidShotTarget;

                int baseS = 0;
                switch (part.PartType)
                {
                    case HumanoidPartType.Head:
                        baseS = m_ScoreData.headHitBaseScore;
                        break;
                    case HumanoidPartType.Body:
                        baseS = m_ScoreData.bodyHitBaseScore;
                        break;
                }
                int comboS = Mathf.CeilToInt(baseS * comboNums * m_ScoreData.comboMul);
                int bestS = m_IsBestHit ? Mathf.CeilToInt(baseS * m_ScoreData.bestHitMul) : 0;
                IncreaseScore(baseS + comboS + bestS);

                if (dependTarget.Health <= 0)
                {
                    if (part.PartType == HumanoidPartType.Head)
                    {
                        Headshots++;
                    }
                    totalKillNum++;
                    DestroyShootingTarget(dependTarget);
                    if (curTargets.Count == 0)
                    {
                        GenerateShotTarget();
                    }
                    comboNums++;
                }
                TotalHitNum++;

                StartBestHitTimer();
            }
            else
            {
                MissHitNum++;

                comboNums = 0;
                int missPunitiveS = Mathf.CeilToInt(m_ScoreData.bodyHitBaseScore * m_ScoreData.missPunitiveMul);
                IncreaseScore(missPunitiveS * -1);
            }
        }
        #endregion
        #region TrainResult
        private void UpdatePrecision()
        {
            double totalShot = TotalHitNum + MissHitNum;
            double precision = 0;
            if (totalShot != 0)
            {
                precision = Math.Round(TotalHitNum / totalShot, 2);
            }
            SetResultMetricsDataValue(MetricsType.Precision, precision);
        }
        #endregion
        private void GenerateShotTarget()
        {
            for (int i = 0; i < m_DifficultyData.targetNums; i++)
            {
                GameObject obj = GameObject.Instantiate<GameObject>(Resources.Load<GameObject>("Prefabs/AIHumanoidShotTarget"));
                AIHumanoidShotTarget target = obj.GetComponent<AIHumanoidShotTarget>();
                target.InitHumanoidShotTarget(3, RandomPosition());
                Vector3 minBoundaryPos = new Vector3(-2f, -2f, 4.5f);
                Vector3 maxBoundaryPos = new Vector3(2f, -2f, 4.5f + m_DifficultyData.boundaryDistance);
                target.InitBoundaryPosition(minBoundaryPos, maxBoundaryPos);
                target.InitHide(originPos, m_DifficultyData.hideProbability);
                target.SetCrouchTimeProportion(m_DifficultyData.crouchTimeProportion);
                target.SetSpeed(m_DifficultyData.speed);
                curTargets.Add(target);
            }
        }

        private void DestroyShootingTarget(AIHumanoidShotTarget target)
        {
            if (target != null)
            {
                curTargets.Remove(target);
                GameObject.Destroy(target.gameObject);
            }
        }

        private Vector3 RandomPosition()
        {
            return originPos[Random.Range(0, originPos.Count)];
        }

        private void ResetTarget()
        {
            for (int i = 0; i < curTargets.Count; i++)
            {
                GameObject.Destroy(curTargets[i].gameObject);
            }
            curTargets.Clear();
        }
    }
}